Bump version to v1.6.4
Update MacPorts note about gcc install on Darwin
Fix build bug for Intel in src/utils/Makefile
Fix misspelled Makefile.ParamertizedModel.teplate
Update C vers: string_init, file_init, and model_info

better error handling in C bindings for the initialization routines
Update doc to indicate SemVer compliance as of v1.6.0
Update Makefiles so clean ensures all intermediates rm'ed
Add error text to make add-* that explains no support for Tests
Eliminate use of 'ed' command in favor of 'sed'
Cosmetic changes to descriptor-file-match.cpp
Correctly set Shapes in ex_test_Ar_multiple_models
Bump version to v1.7.0
Add KIM_API_get_model_kim_str_len() to KIM API
Switch to xxd for encapsulation of ".kim" and parameter files
Add LINKSOPATH setting to allow advanced so management
Fix typos in INSTALL
Tweak to SanityCheck for gfortran version number
Update to permanent openkim.org download URLs
Fix Makefile.ParameterizedModel to depend on kim.tpl
Improve error messages when library file is not accessible